Add 9/6 and 21/18
1st number: 1 3/6, 2nd number: 1 3/18
9/6 + 21/18 is 8/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 6 × 3 = 18,
9/6 = 9 × 3/6 × 3 = 27/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
21/18 = 21 × 1/18 × 1 = 21/18 - Add the two like fractions:
27/18 + 21/18 = 27 + 21/18 = 48/18 - 48/18 simplified gives 8/3
- So, 9/6 + 21/18 = 8/3
In mixed form: 22/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/6+21/18 9/6+42/18 9/12+21/18 9/6+21/36 27/6+21/18 9/6+63/18 9/18+21/18 9/6+21/54 45/6+21/18 9/30+21/18 9/6+21/90 63/6+21/18 9/42+21/18